mirror of
https://github.com/reactos/reactos.git
synced 2024-07-02 10:45:24 +00:00
144 lines
5.3 KiB
C
144 lines
5.3 KiB
C
////////////////////////////////////////////////////////////////////
|
|
// Copyright (C) Alexander Telyatnikov, Ivan Keliukh, Yegor Anchishkin, SKIF Software, 1999-2013. Kiev, Ukraine
|
|
// All rights reserved
|
|
// This file was released under the GPLv2 on June 2015.
|
|
////////////////////////////////////////////////////////////////////
|
|
|
|
#ifndef _GETOPT_H
|
|
#define _GETOPT_H
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
#define BAD_OPTION '\0'
|
|
|
|
typedef struct _optarg_ctx {
|
|
/* For communication from `getopt' to the caller.
|
|
When `getopt' finds an option that takes an argument,
|
|
the argument value is returned here.
|
|
Also, when `ordering' is RETURN_IN_ORDER,
|
|
each non-option ARGV-element is returned here. */
|
|
|
|
WCHAR* optarg;
|
|
|
|
/* Index in ARGV of the next element to be scanned.
|
|
This is used for communication to and from the caller
|
|
and for communication between successive calls to `getopt'.
|
|
|
|
On entry to `getopt', zero means this is the first call; initialize.
|
|
|
|
When `getopt' returns EOF, this is the index of the first of the
|
|
non-option elements that the caller should itself scan.
|
|
|
|
Otherwise, `optind' communicates from one call to the next
|
|
how much of ARGV has been scanned so far. */
|
|
|
|
int optind;
|
|
|
|
/* The next char to be scanned in the option-element
|
|
in which the last option character we returned was found.
|
|
This allows us to pick up the scan where we left off.
|
|
|
|
If this is zero, or a null string, it means resume the scan
|
|
by advancing to the next ARGV-element. */
|
|
|
|
WCHAR *nextchar;
|
|
|
|
/* Callers store zero here to inhibit the error message
|
|
for unrecognized options. */
|
|
|
|
int opterr;
|
|
|
|
/* Set to an option character which was unrecognized.
|
|
This must be initialized on some systems to avoid linking in the
|
|
system's own getopt implementation. */
|
|
|
|
int optopt;
|
|
|
|
/* Describe the part of ARGV that contains non-options that have
|
|
been skipped. `first_nonopt' is the index in ARGV of the first of them;
|
|
`last_nonopt' is the index after the last of them. */
|
|
|
|
int first_nonopt;
|
|
int last_nonopt;
|
|
|
|
/* Exchange two adjacent subsequences of ARGV.
|
|
One subsequence is elements [first_nonopt,last_nonopt)
|
|
which contains all the non-options that have been skipped so far.
|
|
The other is elements [last_nonopt,optind), which contains all
|
|
the options processed since those non-options were skipped.
|
|
|
|
`first_nonopt' and `last_nonopt' are relocated so that they describe
|
|
the new indices of the non-options in ARGV after they are moved.
|
|
|
|
To perform the swap, we first reverse the order of all elements. So
|
|
all options now come before all non options, but they are in the
|
|
wrong order. So we put back the options and non options in original
|
|
order by reversing them again. For example:
|
|
original input: a b c -x -y
|
|
reverse all: -y -x c b a
|
|
reverse options: -x -y c b a
|
|
reverse non options: -x -y a b c
|
|
*/
|
|
|
|
} optarg_ctx, *P_optarg_ctx;
|
|
|
|
/* Describe the long-named options requested by the application.
|
|
The LONG_OPTIONS argument to getopt_long or getopt_long_only is a vector
|
|
of `struct option' terminated by an element containing a name which is
|
|
zero.
|
|
|
|
The field `has_arg' is:
|
|
no_argument (or 0) if the option does not take an argument,
|
|
required_argument (or 1) if the option requires an argument,
|
|
optional_argument (or 2) if the option takes an optional argument.
|
|
|
|
If the field `flag' is not NULL, it points to a variable that is set
|
|
to the value given in the field `val' when the option is found, but
|
|
left unchanged if the option is not found.
|
|
|
|
To have a long-named option do something other than set an `int' to
|
|
a compiled-in constant, such as set a value from `optarg', set the
|
|
option's `flag' field to zero and its `val' field to a nonzero
|
|
value (the equivalent single-letter option character, if there is
|
|
one). For long options that have a zero `flag' field, `getopt'
|
|
returns the contents of the `val' field. */
|
|
|
|
struct option
|
|
{
|
|
WCHAR *name;
|
|
/* has_arg can't be an enum because some compilers complain about
|
|
type mismatches in all the code that assumes it is an int. */
|
|
int has_arg;
|
|
int *flag;
|
|
int val;
|
|
};
|
|
|
|
extern void getopt_init(optarg_ctx* o);
|
|
|
|
/* Names for the values of the `has_arg' field of `struct option'. */
|
|
|
|
#define no_argument 0
|
|
#define required_argument 1
|
|
#define optional_argument 2
|
|
|
|
extern int getopt (optarg_ctx* o, int argc, WCHAR *const *argv, const WCHAR *shortopts);
|
|
extern int getopt_long (optarg_ctx* o, int argc, WCHAR *const *argv, const WCHAR *shortopts,
|
|
const struct option *longopts, int *longind);
|
|
extern int getopt_long_only (optarg_ctx* o, int argc, WCHAR *const *argv,
|
|
const WCHAR *shortopts,
|
|
const struct option *longopts, int *longind);
|
|
|
|
/* Internal only. Users should not call this directly. */
|
|
extern int _getopt_internal (optarg_ctx* o, int argc, WCHAR *const *argv,
|
|
const WCHAR *shortopts,
|
|
const struct option *longopts, int *longind,
|
|
int long_only);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* _GETOPT_H */
|